mann

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  • Created by: helen
  • Created on: 04-02-14 20:23
what was the methodology used by Mann
field experiment
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how many participants were involved
99 - kent police officers - 24M, 75F. they were spilt between detectives, trainers, traffic offciers
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describe the procedure
asked to judge truthfulness of people in real-life police interviews, watched video clips, had to fill out questionnaire about their experience, they also had to rate how confident they felt in their answer, they were also asked to list the cues
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how many suspects were included
14 - head and torso visible in each video
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how many videos were shown
54 that varied in length from 6 to 145 seconds
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what was the % of officers that accurately identified the suspect was lying
66.2%
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what was the % of officers that accurately identified the suspect as telling the truth
63.6%
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what were the most frequent cues that detectives used
gaze, movements, vagueness, contradictions in stories, fidgeting
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what conclusions can be drawn
experience proved to help,
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how many participants were involved

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99 - kent police officers - 24M, 75F. they were spilt between detectives, trainers, traffic offciers

Card 3

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describe the procedure

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Card 4

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how many suspects were included

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how many videos were shown

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